Atmospheric air enters the heated section of a circular tube at a flow rate of 0.01 kg/s and a temperature of 30oC. The tube is of diameter D=40 mm, and fully developed conditions with h=25 W/m2K exist over the entire length of L=5m. For the case of uniform surface heat flux at 1500W/m2 , determine the total heat transfer rate q and the mean temperature of the air leaving the tube Tm,o. What is the value of the surface temperature at the tube inlet Ts,i and outlet Ts,o?

Atmospheric air enters the heated section of a circular tube at a flow rate of 0.01 kg/s and a temperature of 30oC. The tube is of diameter D=40 mm, and fully developed conditions with h=25 W/m2K exist over the entire length of L=5m. For the case of uniform surface heat flux at 1500W/m2 , determine the total heat transfer rate q and the mean temperature of the air leaving the tube Tm,o. What is the value of the surface temperature at the tube inlet Ts,i and outlet Ts,o?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.32P

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